Showing posts with label hypothermia. Show all posts
Showing posts with label hypothermia. Show all posts

Friday, May 8, 2020

Avalanche Resuscitation in the Emergency Department


Image Credit: Wikipedia
This post was peer reviewed.
Click to learn more.
Authors: Vivek Abraham, MS4
Medical Student
Uniformed Services University F. Edward Hebert School of Medicine

Ivan Yue, MS4
Medical Student
Uniformed Services University F. Edward Hebert School of Medicine
AAEM/RSA Publications and Social Media Committee

Alexander Li, MS4
Medical Student
Uniformed Services University F. Edward Hebert School of Medicine

Introduction
Avalanches are among the most feared events to occur in mountainous areas. Although the morbidity and mortality statistics are underreported worldwide, in North America and Europe combined there are roughly 140 avalanche-related deaths per year.[1,2] The majority of victims include snowboarders, skiers, mountaineers, and snowmobilers. With more people seeking to participate in snow sports or explore the mountains as part of expeditions, preparing to treat avalanche-related injuries is essential for an emergency physician working or traveling near a mountainous area. This article details the resuscitation guidelines that physicians can implement for those who fall victim to an avalanche as well as recommendations for mitigating avalanche exposure risk.

Sunday, December 6, 2015

Board Review: Hypothermia/Cold Water Submersion

Author: Kevin P. Beres, DO PGY-1
UTHealth Emergency Medicine Resident

Originally Published: Modern Resident, April/May 2015 

Growing up in Wisconsin, one of the beloved New Year’s traditions was the polar bear plunge, which translates to a group of people jumping into the cold lakes on New Year’s Day. This event brings up two important concepts: cold water submersion and accidental hypothermia. Risk factors for accidental hypothermia include alcohol, AMS, behavior, extreme ages and certain comorbidities including peripheral vascular disease, trauma and diabetes mellitus.[1,2]

Cold Water Submersion:
When the body comes into contact with cold water, it leads to activation of the Mammalian diving reflex, resulting in bradycardia, shunting of blood to the CNS system and slow metabolism and may actually prolong survival.[1] This reflex affects children more efficiently than adults. Alcohol has been shown to reduce this reflex.[3]

Chilblains:
Chilblains are red and/or blue edematous plaques and papules that appear on the distal extremities that occur secondary to prolonged cold exposure. A variety of sensory symptoms such as itching or burning can accompany the skin changes.[1]